5. In an experiment, 44 g of propane was burned, producing 132 g of carbon dioxide and of 72g water. The mass of oxygen that was needed for the reaction was ____________________.

6. Butane burns as shown in the balanced chemical equation 2C4H10 + 13O2 arrow 10H2O + 8CO2. If 6 mol of butane burn, ____________________ mol of carbon dioxide are produced.

7. An iron fence is left unpainted, and it reacts with the oxygen in the air, forming rust. The formation of rust is an oxidation-reduction reaction, but it is also an example of a ____________________ reaction.

Question

5.   In an experiment, 44 g of propane was burned, producing 132 g of carbon dioxide and of 72g water. The mass of oxygen that was needed for the reaction was ____________________.  

6.   Butane burns as shown in the balanced chemical equation 2C4H10 + 13O2 arrow 10H2O + 8CO2. If 6 mol of butane burn, ____________________ mol of carbon dioxide are produced.  

7.   An iron fence is left unpainted, and it reacts with the oxygen in the air, forming rust. The formation of rust is an oxidation-reduction reaction, but it is also an example of a ____________________ reaction.

anonymous · Answer

8.   Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions involved in cooking can be described as ____________________. 

9.   Measuring how quickly a reactant disappears is one way to measure the ____________________ of the reaction. 

10.   A chunk of limestone, which is calcium carbonate, reacts with acid at a certain rate. If the limestone were crushed, the rate of reaction between the acid and the limestone would ____________________.